Best Quality Natural Flake Graphite Products

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Qingdao
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TT OR LC
Min Order Qty:
500 m.t.
Supply Capability:
1000 m.t./month

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Product Description:

Specifications

F.C:80%min-98%min Size:+80mesh,+100mesh,-100mesh.

1. Description & Application

    Widely applied to high quality fire resistance material and coating of metallurgy industry,hot working

    material stabilizer of military industry,lead of light industry,carbon brush of electrical industry,electrode of

    battery industry,and catalyzer and additive of fertilizer industry.After further process,scale graphite can be

    made into the following high-tech products such as graphite colloidal graphite,graphite compacting material

    and composite material,graphite products,and graphite anti-friction additive,which are becoming important

    nonmetal mineral materials in every industry.

2. Technical Specification


    

ITEM

F.C %(min)

V.M %(max)

ASH %(max)

MOISTURE

%(max)

SIZE

-198

98

1.0

1.0

0.5

-100mesh

+198

98

1.0

1.0

0.5

+100mesh

-197

97

1.2

1.8

0.5

-100mesh

+197

97

1.2

1.8

0.5

+100mesh

-196

96

1.2

2.8

0.5

-100mesh

+196

96

1.2

2.8

0.5

+100mesh

-195

95

1.2

3.8

0.5

-100mesh

+195

95

1.2

3.8

0.5

+100mesh

-194

94

1.2

4.8

0.5

-100mesh

+194

94

1.2

4.8

0.5

+100mesh

-193

93

1.5

5.5

0.5

-100mesh

+193

93

1.5

5.5

0.5

+100mesh

-192

92

1.5

6.5

0.5

-100mesh

+192

92

1.5

6.5

0.5

+100mesh

-190

90

2.0

8.0

0.5

-100mesh

+190

90

2.0

8.0

0.5

+100mesh

-185

85

2.5

12.5

0.5

-100mesh

+185

85

2.5

12.5

0.5

+100mesh

-180

80

3.0

17.0

1

-100mesh

+180

80

3.0

17.0

1

+100mesh

+897

97

1.2

1.8

0.5

+80mesh

+896

96

1.2

2.8

0.5

+80mesh

+895

95

1.2

3.8

0.5

+80mesh

+894

94

1.2

4.8

0.5

+80mesh

+892

92

1.5

6.5

0.5

+80mesh

+890

90

2.0

8.0

0.5

+80mesh

 

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Q:What are the requirements for the performance of refractory materials?
Performance requirements for electric furnace lining refractory: 1, sufficient refractoriness and softening point. Because of eletric arc, the inner surface temperature of lining can be as high as 1500 to 1800 degree. 2, strong resistance to slag. Because the dust penetrate into the furnace through pore lining, and the refractory material subject to loss, leading to spalling. 3, good thermal and shock resistance. Because during steelmaking, opening door and lifting of the furnace will lead to sudden changes in the temperature of the furnace lining refractory material, so spalling and cracking may occur, damaging the lining premature. 4, enough strength, because the lining is impact during charging, tilted when vibration,and eroded by metal, slag and airflow. 5, the thermal conductivity shall be small, and the conductivity shall be low. The commonly used furnace refractories are dolomite brick, magnesia brick, high alumina brick, silica brick and magnesia ramming etc.. Because of different working conditions of the various parts of the furnace, the refractory materials are not the same.
Q:Who knows about the types of Dalian thermal insulating and refractory materials?
(1) rock wool board: the heat conductivity coefficient is 0.041-0.045. It is fire retardant, has a great temperature absorption while a poor thermal insulation performance. (2) glass wool: it is simple in construction and free in cutting. It has advantages of antibiosis, mould proof, aging resistance and anticorrosion, and can ensure a healthy environment. It has a low hygroscopicity and a stable physical property. (3) expanding polystyrene board(EPS board): thermal conductivity: 0.037-0.041, it has a good thermal insulation performance, cheap price but a poor intensity. (4) extruded polystyrene board(XPS board): thermal conductivity: 0.028-0.03, it has a better thermal insulation performance, high intensity, moisture resistance while it is expensive, and requires surface treatments during construction. (5) gelatine powder polyphenyl granule heat insulating slurry: heat conductivity coefficient: 0.057-0.06, it has a good flame resistance while a poor thermal insulation performance, as well as has high construction requirements and can be recycled. (6) polyurethane foam: heat conductivity coefficient: 0.025-0.028, it has advantages of waterproofness, thermal insulation, high intensity, high integrity, and good integrity, but it has a poor fireproof performance and is more expensive. (7) rigid polyurethane: heat conductivity coefficient: 0.018-0.023, it has advantages of low heat conductivity coefficient and good thermal performance. When the unit weight of rigid polyurethane is 35 to 40kg per cubic meters, it is equivalent to half of the EPS. It is the one with the lowest heat conductivity coefficient among all the thermal insulation materials. (8) perlite slurry: heat conductivity coefficient: 0.07-0.09, it has advantages of fire and high-temperature resistance, and high water absorption but is poor in thermal insulation.
Q:How to deiron refractory?
It cannot be done in conventional approaches, because you are referring to refractories. If using acid liquor soaking method to deiron, the material itself will be also damaged! If just for reducing the corrosion of materials, it will be OK to add a corrosion-resistant and fireproof protection layer.
Q:Fire resistance and evaluation of refractory for casting
The refractory degree of refractory material at high temperature is called refractoriness. Refractory products all contain substances from fusible sintering action, the melt crystal as unlike at a fixed temperature, but the temperature in a wide range. At a lower temperature, a small amount of melt is formed, and as the temperature increases, the amount of the melt increases, and the product gradually softens. Refractoriness and melting point (crystal) are different concepts.
Q:what textures of furnace refractories are good?
First, it depends on the kiln. If it is the cubic kiln, the top and the wall portion should use alumina hollow ball bricks. The bent seal and kiln car use heavy corundum bricks. If it is the consecutive kiln, the burning zone shall all use the alumina hollow ball bricks, and both the burning zone bent seal and the brick kiln car bent seal use the heavy corundum bricks. Ifit is the pit furnace, furnace walls and roof use the alumina hollow ball bricks, and the bottom of the furnace use heavy corundum bricks.
Q:what's the fireproof levels of fireproof and thermal inuslation matertial?
What are the fireproof levels of fireproof and thermal inuslation matertial on the market? how to divide the fireproof levels of fireproof and thermal insulation material?
Q:What's the difference between refractory metal raceway and fireproof raceway?
Refractory metal is used to lay and control cables, while trunking is used to lay wires and communication cables; refractory metal is bigger (200*100-600*200), while trunking is smaller; refractory metal has bigger turning radius, while trunking mostly turns a right angle; refractory metal has larger span, while trunking has smaller span; their fixation and installation ways are also different.
Q:The history of refractory material
Q:how to classify the fireproofing material levels A1 A2 B1?
their classification is shown specifically in Fireproof  Specification of Building Interior Decoration Design GB 50222-95 appendix A, flammability,inflammability materials, flame retardency, noninflammability: combustion performance of A, B3, B2, B1 materials are divided into
Q:How long is the fire endurance of Grade A fire resisting shutter
Fire door can be divided into Grade A, Grade B and Grade C fire door according to its fire endurance. Their fire endurance is not less than 1.20h, 0.90h and 0.60h respectively. Use fire resisting shutter as fire compartment separation in places where it is difficult to set firewall. When fire resisting shutter whose unexposed surface temperature rise is used as judging condition of fire endurance is used, its fire endurance should not be lower than 3h. When fire resisting shutter whose unexposed surface temperature rise is used as judging condition of fire endurance is not used, individual protection of  closed automatic water spray system shoule be set at two sides of the shutters and duration of water spray system should not be less than 3.0h. When the fire resisting shutter is used for fire compartment, fire endurance is 3h. When the fire resisting shutter is set at the opening part of firewall, fire endurance is 1.2h.

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